I don't think you need to be on here long to ask for T & P, especially since you've made it clear you're staying on the board and it isn't in a "drive-by" like manner.
I will be keeping both you and your sister in my T & P. I hope that things work out for her..... if not I am so sorry for her loss and I know she will find some peace in you being there for her like you are now.